#include"csapp.h"

int main(){
	int fd;
	char c;

	fd=Open("foobar.txt",O_RDONLY,0);
	if(Fork()==0){
		Read(fd,&c,1);
		exit(0);
	}
	Wait(NULL);
	Read(fd,&c,1);
	printf("c=%c\n",c);
	exit(0);
}
